CMN-NMRV-F Worm Gear Reducers/Worm Gearbox
The CMN-NMRV-F worm gear reducer with input and output flanges is a compact and highly efficient mechanical power transmission device used in a wide range of industrial applications. It is part of the CMN-NMRV series worm gearbox, known for its lightweight, modular design, and superior performance. This type of worm gear reducer integrates an input flange, which allows it to connect seamlessly to motors such as servo or AC motors, and an output flange, enabling direct connection to machinery or other components.
The CMN-NMRV-F worm gear reducer with input and output flanges is a compact and highly efficient mechanical power transmission device used in a wide range of industrial applications. It is part of the CMN-NMRV series worm gearbox, known for its lightweight, modular design, and superior performance. This type of worm gear reducer integrates an input flange, which allows it to connect seamlessly to motors such as servo or AC motors, and an output flange, enabling direct connection to machinery or other components.
The CMN-NMRV-F worm gearbox is constructed with high-strength aluminum alloy for corrosion resistance and durability, making it ideal for harsh environments. With its worm and wheel mechanism, it provides smooth torque transmission, high reduction ratios, and self-locking capabilities, ensuring reliable operation. Additionally, it operates with minimal noise and vibration, making it suitable for precision tasks in conveyors, packaging machinery, and automation systems.

CMN-NMRV-F Worm Gearbox Specifications
| Item | Worm Gearbox |
| Type | CMN-NMRV-F |
| Model | CMN-NMRV-F 25/30/40/50/63/75/90/110/130/150/185 |
| Reduction Ratio | 5,7.5,10,15,20,25,30,40,50,60,80,100 |
| Flange | FA / FL or as per your demands |
| Matching Motor | 0.06KW~15KW |
| Material | Die-casting Aluminum Alloy |
| Color | Blue /Silver Grey /Customized |
| Flange Standard | PAM / IEC |
| Accessories | Shaft, Flange, Torque arm, etc |
| Lubricant | Synthetic Oil or Worm Gear Oil |
| Usage | Machinery of food stuff, ceramics, chemicals, packing, dyeing, wood working, glass industries, etc |
| Note: 1) Please choose from the above specifications. 2) If the above options can not meet your demands, please send us your requirements(ratio, flange, mounting, application, or a picture of your old one), and we will recommond a suitable type. | |
CMN-NMRV-F Worm Gearbox Model & Marker
| CMN-NMRV-063-30-VS-F1(FA)-AS-80B5-0.75kW-B3 | |||
| CMN-NMRV | Worm geared motor | ||
| CMN-NRV | Worm reduction unit | ||
| 063 | Center distance | ||
| 30 | Reduction ratio | ||
| VS | Double input shaft | F1(FA) | Output flange |
| AS | Single output shaft | AB | Double output shaft |
| PAM | Fitted for motor coupling | 80B5 | Motor size & mounting position |
| 0.75kW | Power of electric motor | B3 | Mounting position |
Mounting Position

Flange F-FL

Position of Terminal Box

Position of Output Shaft

Double Extension Worm Shaft

Position of Torque Arm

CMN-NMRV-F Worm Gear Reducer Dimensions
CMN-NMRV-F Inch Series



| Hollow Output Bore | 030 | 040 | 050 | 063 | 075 | 090 | 110 | 130 | |
| RH | 0.71 | 0.84 | 1.12 | 1.24 | 1.37 | 1.52 | 1.8 | 1.93 | |
| SH | 0.188 | 0.188 | 0.25 | 0.25 | 0.25 | 0.313 | 0.375 | 0.375 | |
| UH | 0.625+0.001 0 | 0.75+0.001 0 | 1+0.001 0 | 1.125+0.001 0 | 1.25+0.001 0 | 1.375+0.001 0 | 1.625+0.001 0 | 1.750 | |
| VB | 0.83 | 1.14 | 1.28 | 1.42 | 1.56 | 1.77 | 1.97 | 2.24 | |
| Output Shaft | 030 | 040 | 050 | 063 | 075 | 090 | 110 | 130 | |
| R | 0.7 | 0.83 | 1.11 | 1.23 | 1.36 | 1.51 | 1.79 | 1.92 | |
| S | 0.188 | 0.188 | 0.25 | 0.25 | 0.25 | 0.313 | 0.375 | 0.375 | |
| U | 0.6250 -0.0005 | 0.750 -0.0005 | 10 -0.0005 | 0 -0.0005 | 1.250 -0.0005 | 1.3750 -0.0005 | 1.6250 -0.0005 | 1.750 -0.0005 | |
| U KEY | 0.1875x1.125 | 0.1875x1.5 | 0.25x1.5 | 0.25x1.875 | 0.25x2.25 | 0.3125x2.5 | 0.375x2.75 | 0.375x2.75 | |
| UT | 1/4-20 | 1/4-20 | 3/8-16 | 3/8-16 | 1/2-13 | 1/2-13 | 5/8-11 | 5/8-11 | |
| V | 1.57 | 1.97 | 1.97 | 2.36 | 2.76 | 3.15 | 3.54 | 3.54 | |
| VA | 1.67 | 2.09 | 2.11 | 2.5 | 2.89 | 3.33 | 3.72 | 3.74 | |
| Y | 5.82 | 7.25 | 7.84 | 9.41 | 10.5 | 12.17 | 13.54 | 14.17 | |
| CMN-NMRV-F | 030 | 040 | 050 | 063 | 075 | 090 | 110 | 130 |
| A | 2.48 | 3.07 | 3.62 | 4.41 | 4.72 | 5.51 | 6.1 | 6.69 |
| B | 2.24 | 2.81 | 3.31 | 4.02 | 4.69 | 5.31 | 6.59 | 7.38 |
| BA | 2.56 | 2.95 | 3.35 | 3.74 | 4.53 | 5.12 | 6.5 | 8.46 |
| BC | 2.95 | 3.43 | 3.94 | 4.33 | 5.51 | 6.3 | 7.87 | 9.84 |
| BH | 90 ° | 45 ° | 45 ° | 45 ° | 45 ° | 45 ° | 45° | 45 ° |
| BK | 2.165 0 -0.0018 | 2.362 0 -0.0018 | 2.756 0 -0.0018 | 3.15 0 -0.0021 | 3.74 0 -0.0021 | 4.331 0 -0.0021 | 5.118 0 -0.0025 | 7.087 0 -0.0025 |
| BL | M6x11 | M6x10 | M8x10 | M8x14 | M8x14 | M10x18 | M10x18 | M12x21 |
| C | 1.18 | 1.57 | 1.97 | 2.48 | 2.95 | 3.54 | 4.33 | 5.12 |
| D | 1.57 | 1.97 | 2.36 | 2.83 | 3.39 | 4.06 | 5.02 | 5.81 |
| E | 2.13 | 2.76 | 3.15 | 3.94 | 4.72 | 5.51 | 6.69 | 7.87 |
| F | 1.73 | 2.36 | 2.76 | 3.35 | 3.54 | 3.94 | 4.53 | 4.72 |
| G | 0.22 | 0.26 | 0.28 | 0.31 | 0.39 | 0.43 | 0.57 | 0.61 |
| H | 0.26 | 0.26 | 0.33 | 0.33 | 0.45 | 0.51 | 0.55 | 0.63 |
| J | 3.15 | 3.98 | 4.76 | 5.75 | 6.85 | 8.19 | 9.94 | 11.52 |
| K | 1.26 | 1.69 | 1.93 | 2.64 | 2.83 | 2.91 | - | - |
| L | 2.2 | 2.8 | 3.35 | 4.06 | 4.41 | 5.12 | 5.67 | 6.1 |
| M | 2.28 | 2.87 | 3.43 | 4.17 | 4.49 | 5.28 | 5.83 | 6.38 |
| N | 1.06 | 1.38 | 1.57 | 1.97 | 2.36 | 2.76 | 3.35 | 3.94 |
| O | 3.82 | 4.78 | 5.67 | 6.85 | 8.07 | 9.37 | 11.61 | 13.19 |
| P | 2.64 | 3.15 | 3.54 | 4.13 | 4.96 | 5.63 | 6.81 | 7.6 |
| Q | 0.83 | 2.36 | 2.91 | 3.54 | 4.13 | 4.92 | 5.59 | 6.38 |
| T | 1.73 | 2.17 | 2.52 | 3.15 | 3.66 | 4.02 | 4.92 | 5.51 |
| Z | 2.91 | 3.63 | 3.92 | 4.71 | 5.25 | 6.09 | 6.77 | 7.09 |
| Output Flange | AA | AB | AC | AD | AF | AG | AH | AK | AL | ||
| 030 | FA | 2.68 | 2.15 | 3.15 | 2.76 | 0.24 | 0.16 | 45° | 1.969 | +0.0015 0 | 0.26 |
| 040 | FA | 2.95 | 2.64 | 4.33 | 3.74 | 0.28 | 0.16 | 45° | 2.362 | +0.0018 | 0.35 |
| 0 | |||||||||||
| FB | 2.95 | 3.82 | 4.33 | 3.74 | 0.28 | 0.16 | 45° | 2.362 | +0.0018 0 | 0.35 | |
| FC | 4.53 | 3.15 | 5.51 | - | 0.35 | 0.2 | 45° | 3.74 | +0.0021 0 | 0.37 | |
| FD | 3.94 | 2.28 | 4.72 | - | 0.47 | 0.2 | 45° | 3.15 | +0.0018 | 0.35 | |
| 0 | |||||||||||
| 050 | FA | 3.35 | 3.54 | 4.92 | 4.33 | 0.35 | 0.2 | 45° | 2.756 | +0.0018 | 0.43 |
| 0 | |||||||||||
| FB | 3.35 | 4.72 | 4.92 | 4.33 | 0.35 | 0.2 | 45° | 2.756 | +0.0018 0 | 0.43 | |
| FC | 5.12 | 3.5 | 6.3 | - | 0.39 | 0.2 | 45° | 4.331 | +0.0021 0 | 0.37 | |
| FD | 4.53 | 2.83 | 5.51 | - | 0.57 | 0.2 | 45° | 3.543 | +0.0021 | 0.43 | |
| 0 | |||||||||||
| 063 | FA | 4.13 | 3.23 | 7.09 | 5.59 | 0.39 | 0.24 | 45° | 4.528 | +0.0021 | 0.43 |
| 0 | |||||||||||
| FB | 5.91 | 4.41 | 7.09 | 5.59 | 0.39 | 0.24 | 45° | 4.528 | +0.0021 | 0.43 | |
| 0 | |||||||||||
| FC | 6.5 | 3.86 | 7.87 | - | 0.39 | 0.2 | 45° | 5.118 | +0.0025 0 | 0.43 | |
| FD | 6.5 | 4.21 | 7.87 | - | 0.39 | 0.2 | 45° | 5.118 | +0.0025 | 0.43 | |
| 0 | |||||||||||
| FE | 5.12 | 3.17 | 6.3 | - | 0.65 | 0.2 | 45° | 4.331 | +0.0021 | 0.43 | |
| 0 | |||||||||||
| 075 | FA | 6.5 | 4.37 | 7.87 | 6.69 | 0.51 | 0.24 | 45° | 5.118 | +0.0025 | 0.55 |
| 0 | |||||||||||
| FB | 5.12 | 3.54 | 6.3 | - | 0.51 | 0.24 | 45° | 4.331 | +0.0021 | 0.55 | |
| 0 | |||||||||||
| 090 | FA | 6.89 | 4.37 | 8.27 | 8.27 | 0.51 | 0.24 | 45° | 5.984 | +0.0025 | 0.55 |
| 0 | |||||||||||
| FB | 8.46 | 4.8 | 9.84 | - | 0.71 | 0.24 | 45° | 7.087 | +0.0025 0 | 0.55 | |
| FC | 6.5 | 4.33 | 7.87 | - | 0.67 | 0.24 | 45° | 5.118 | +0.0025 0 | 0.43 | |
| FD | 6.89 | 5.94 | 8.27 | - | 0.51 | 0.24 | 45° | 5.984 | +0.0025 | 0.55 | |
| 0 | |||||||||||
| 110 | FA | 9.06 | 5.16 | 11.02 | 10.24 | 0.59 | 0.24 | 45° | 6.693 | +0.0025 | 0.55 |
| 0 | |||||||||||
| FB | 9.06 | 7.09 | 11.02 | 10.24 | 0.59 | 0.24 | 45° | 6.693 | +0.0025 | 0.55 | |
| 0 | |||||||||||
| 130 | FA | 10.04 | 5.51 | 12.6 | 11.42 | 0.59 | 0.24 | 22.5° | 7.087 | +0.0025 0 | 0.63 |
| Input Shaft | 030 | 040 | 050 | 063 | 075 | 090 | 110 | 130 | |
| SB | 0.094 | 0.125 | 0.188 | 0.188 | 0.188 | 0.188 | 0.25 | 0.25 | |
| RB | 0.42 | 0.55 | 0.7 | 0.83 | 0.96 | 0.96 | 1.24 | 1.36 | |
| UB | 0.3750 -0.0005 | 0.50 -0.0005 | 0.6250 -0.0005 | 0.750 -0.0005 | 0.8750 -0.0005 | 0.8750 -0.0005 | 1.1250 -0.0005 | 1.250 -0.0005 | |
| UB KEY | 0.094x0.875 | 0.125x0.875 | 0.1875x1.125 | 0.1875x1.5 | 0.1875x1.875 | 0.1875x1.875 | 0.25x2.25 | 0.25x2.5 | |
| UR | - | 1/4-20 | 1/4-20 | 1/4-20 | 1/4-20 | 1/4-20 | 3/8-16 | 1/2-13 | |
| VN | 1.18 | 1.18 | 1.58 | 1.97 | 2.36 | 2.36 | 2.76 | 3.15 | |
High Speed Extension Shaft Dimensions

| CMN-NMRV-F | EA | U | VN | UR | S2 | R2 | KEY | |
| Length | Square | |||||||
| 030 | 1.772 | 0.3750 -0.0005 | 1.18 | - | 0.093 | 0.42 | 0.875 | 0.094 |
| 040 | 2.087 | 0.50 -0.0005 | 1.18 | 1/4-20 | 0.13 | 0.55 | 0.875 | 0.125 |
| 050 | 2.52 | 0.6250 -0.0005 | 1.58 | 1/4-20 | 0.19 | 0.7 | 1.125 | 0.188 |
| 063 | 2.953 | 0.750 -0.0005 | 1.97 | 1/4-20 | 0.19 | 0.83 | 1.5 | 0.188 |
| 075 | 3.543 | 0.8750 -0.0005 | 2.36 | 1/4-20 | 0.19 | 0.96 | 1.875 | 0.188 |
| 090 | 4.252 | 0.8750 -0.0005 | 2.36 | 1/4-20 | 0.19 | 0.96 | 1.875 | 0.188 |
| 110 | 5.315 | 1.1250 -0.0005 | 2.76 | 3/8-16 | 0.25 | 1.24 | 2.25 | 0.25 |
| 130 | 6.102 | 1.250 -0.0005 | 3.15 | 1/2-13 | 0.25 | 1.36 | 2.5 | 0.25 |
Torque Arm Dimensions

| CMN-NMRV-F | I | IA | IL | IR | IW |
| 025 | 2.76 | 0.69 | 0.31 | 0.59 | 0.55 |
| 030 | 3.35 | 0.94 | 0.31 | 0.59 | 0.55 |
| 040 | 3.94 | 1.24 | 0.39 | 0.71 | 0.55 |
| 050 | 3.94 | 1.52 | 0.39 | 0.71 | 0.55 |
| 063 | 5.91 | 1.93 | 0.39 | 0.71 | 0.55 |
| 075 | 7.87 | 1.87 | 0.79 | 1.18 | 0.98 |
| 090 | 7.87 | 2.26 | 0.79 | 1.18 | 0.98 |
| 110 | 9.84 | 2.44 | 0.98 | 1.38 | 1.18 |
| 130 | 9.84 | 2.72 | 0.98 | 1.38 | 1.18 |
Protective Cover Dimensions

| CMN-NMRV-F | Q |
| 030 | 1.65 |
| 040 | 1.97 |
| 050 | 2.28 |
| 063 | 2.72 |
| 075 | 2.91 |
| 090 | 3.39 |
| 110 | 3.7 |
| 130 | 4.02 |
NEMA Flange Availability
| CMN-NMRV-F | NEMA Flange | Input Bore Diameter | Available Ratios | |||||||||||
| 5 | 7.5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 100 | |||
| 030 | 48C | 0.5 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |
| 040 | 56C | 0.625 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 050 | 56C | 0.625 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| 063 | 56C | 0.625 | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| 140TC | 0.875 | ● | ● | ● | ● | ● | ● | ● | ||||||
| 075 | 56C | 0.625 | ● | ● | ● | ● | ||||||||
| 140TC | 0.875 | ● | ● | ● | ● | ● | ● | |||||||
| 180TC | 1.125 | ● | ● | ● | ||||||||||
| 090 | 56C | 0.625 | ● | ● | ||||||||||
| 140TC | 0.875 | ● | ● | ● | ● | ● | ||||||||
| 180TC | 1.125 | ● | ● | ● | ● | ● | ● | ● | ||||||
| 110 | 140TC | 0.875 | ● | ● | ● | ● | ||||||||
| 180TC | 1.125 | ● | ● | ● | ● | ● | ● | |||||||
| 210TC | 1.375 | ● | ● | ● | ● | |||||||||
| 130 | 140TC | 0.875 | ● | ● | ||||||||||
| 180TC | 1.125 | ● | ● | ● | ● | ● | ||||||||
| 210TC | 1.375 | ● | ● | ● | ● | ● | ● | ● | ||||||
CMN-NMRV-F Worm Gear Reducer Features
- Compact and Lightweight Design
The CMN-NMRV-F worm gear reducer features a compact structure and lightweight aluminum alloy housing, ensuring easy installation and handling. Its space-saving design makes it ideal for applications with limited installation room without compromising its durability or mechanical strength. - High Efficiency and Smooth Operation
This worm drive gearbox offers superior transmission efficiency, reducing energy loss during operation. Its worm and gear mechanism ensures smooth rotational motion with minimal noise and vibration, making it suitable for applications requiring precision and quiet operation, even in demanding environments. - Input and Output Flange Compatibility
The worm gearbox with input and output flanges enable seamless connection to motors and external machinery. This ensures compatibility with servo motors, AC motors, and other equipment, offering greater flexibility for diverse applications across various industrial sectors. - Corrosion-Resistant Construction
The housing is made from high-quality aluminum or cast iron with a protective coating, providing excellent resistance to corrosion, rust, and environmental damage. This makes it ideal for use in harsh industrial environments, including outdoor or chemical-exposed applications. - Wide Range of Ratios and Configurations
The CMN-NMRV-F worm reducer gearbox is available in various reduction ratios, offering versatility to meet diverse application needs. Its modular design allows compatibility with multiple mounting positions, motor types, and input/output configurations, providing unmatched flexibility for customization. - Self-Locking Functionality
The worm gear mechanism ensures a reliable self-locking feature, preventing back-driving in applications requiring holding torque. This makes it particularly suitable for safety-critical systems, such as lifts, conveyors, or positioning machinery, where stability and security are paramount.

CMN-NMRV-F Worm Drive Gearbox Applications
Additional information
| Edited by | Yjx |
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